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  2. Hydrogen production - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_production

    Hydrogen gas is produced by several industrial methods. [1] Nearly all of the world's current supply of hydrogen is created from fossil fuels. [2] [3] Most hydrogen is gray hydrogen made through steam methane reforming. In this process, hydrogen is produced from a chemical reaction between steam and methane, the main component of natural gas.

  3. Kipp's apparatus - Wikipedia

    en.wikipedia.org/wiki/Kipp's_apparatus

    Kipp's apparatus, also called a Kipp generator, is an apparatus designed for preparation of small volumes of gases. It was invented around 1844 by the Dutch pharmacist Petrus Jacobus Kipp and widely used in chemical laboratories and for demonstrations in schools into the second half of the 20th century.

  4. Haber process - Wikipedia

    en.wikipedia.org/wiki/Haber_process

    The gas mixture is cooled to 450 °C in a heat exchanger using water, freshly supplied gases, and other process streams. The ammonia also condenses and is separated in a pressure separator. Unreacted nitrogen and hydrogen are then compressed back to the process by a circulating gas compressor, supplemented with fresh gas, and fed to the reactor ...

  5. Hydrogen - Wikipedia

    en.wikipedia.org/wiki/Hydrogen

    Hydrogen gas is colorless and transparent, here contained in a glass ampoule. Phase diagram of hydrogen. The temperature and pressure scales are logarithmic, so one unit corresponds to a 10× change. The left edge corresponds to 10 5 Pa, or about one atmosphere. [image reference needed]

  6. Ammonia production - Wikipedia

    en.wikipedia.org/wiki/Ammonia_production

    Illustrating inputs and outputs of simple electrolysis of water, for production of hydrogen. In a hydrogen economy some hydrogen production could be diverted to feedstock use. For example, in 2002, Iceland produced 2,000 tons of hydrogen gas by electrolysis, using excess power from its hydroelectric plants, primarily for fertilizer. [17]

  7. Hydrogenation - Wikipedia

    en.wikipedia.org/wiki/Hydrogenation

    Hydrogen is added directly from a cylinder or built in laboratory hydrogen source, and the pressurized slurry is mechanically rocked to provide agitation, or a spinning basket is used. [37] Recent advances in electrolysis technology have led to the development of high pressure hydrogen generators , which generate hydrogen up to 1,400 psi (100 ...

  8. Water gas - Wikipedia

    en.wikipedia.org/wiki/Water_gas

    In 1873, Thaddeus S. C. Lowe developed and patented the water gas process by which large amounts of hydrogen gas could be generated for residential and commercial use in heating and lighting. This gas provided a more efficient heating fuel than the common coal gas, or coke gas, which was used in municipal service. The process used the water-gas ...

  9. Bergius process - Wikipedia

    en.wikipedia.org/wiki/Bergius_process

    Overall, about 97% of input carbon fed directly to the process can be converted into synthetic fuel. However, any carbon used in generating hydrogen will be lost as carbon dioxide, so reducing the overall carbon efficiency of the process. There is a residue of unreactive tarry compounds mixed with ash from the coal and catalyst.